
<template>
    <div class="login_container">
        <div class="login_box">
            <!-- 头像区 -->
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="null">
            </div>
            <!-- 登录表单区 -->
            <el-form ref="loginFormRef" :model="logoForm" :rules="logoFormRules" label-width="0" class="login_form">
                <el-form-item prop="username">
                    <el-input v-model="logoForm.username" prefix-icon="iconfont icon-user"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input v-model="logoForm.password" prefix-icon="iconfont icon-3702mima" type="password"></el-input>
                </el-form-item>
                <el-form-item class="btns">
                    <el-button type="primary" @click="login">登录</el-button>
                    <el-button type="info" @click="resetLoginForm">重置</el-button>
                </el-form-item>
            </el-form>
        </div>
    </div>
</template>

<script>
export default {
    data () {
        return {
        // 这是登录表单的数据绑定对象
        logoForm: {
            username: 'admin',
            password: '123456'
            },
        // 这是表单的验证规则对象
        logoFormRules: {
            // 验证用户名是否合法
            username: [
                { required: true, message: '请输入登录名称', trigger: 'blur' },
                { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
            ],
            // 验证密码是否合法
            password: [
                { required: true, message: '请输入登录密码', trigger: 'blur' },
                { min: 6, max: 18, message: '长度在 6 到 18 个字符', trigger: 'blur' }
            ]
        }
        }
    },
    methods: {
        // 点击重置按钮，重置登录表单
        resetLoginForm () {
            // console.log(this)
            this.$refs.loginFormRef.resetFields()
        },
        // 表单提交前的预验证
        login () {
            this.$refs.loginFormRef.validate(async valid => {
                // console.log(valid)
                if (!valid) return
                const { data: res } = await this.$http.post('login', this.logoForm)
                // console.log(res)
                if (res.meta.status !== 200) return this.$message.error('登录失败')
                this.$message.success('登录成功')
                // 登录成功后将 token,保存到window中的sessionStorage中
                // console.log(res)
                window.sessionStorage.setItem('token', res.data.token)
                // 编程式导航跳转
                this.$router.push('/home')
            })
        }
    }
}
</script>

<style lang="less" scoped>
.login_container{
    background-color: #2b4b6b;
    height: 100%;
}
.login_box{
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    .avatar_box{
        position: absolute;
        left: 50%;
        transform: translate(-50%,-50%);
        padding: 10px;
        width: 130px;
        height: 130px;
        border: 1px solid #eee;
        border-radius: 50%;
        box-shadow: 0 0 10px #ddd;
        background-color: #fff;

        img{
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background-color: #eee;
        }
    }

    .login_form{
        position: absolute;
        bottom: 0;
        width: 100%;
        padding: 20px;
        box-sizing: border-box;
    }

    .btns{
        display: flex;
        justify-content: flex-end;
    }
}
</style>
